Nut-lock



(No Model.)

R.- C. SMITH.

' y NUT 1.00K, Y lN0.'260',131. rPai-(lterd JunZ?, 1882"."v

? d( y y wc/wmci' 59mm/ 1 his Aforney.:

UNITED STATES PATENT OEEICE.

RICHARDS O. SMITH, OF BALTIMORE, MARYLAND.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 260,131, dated June 27, 1882.

Application filed March 8, 1882. (No model.) Y

To all whom it may concern' Be it known that 1, RICHARDS C. SMITH, of the city of Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Nut-Locks, ot' which the following is a specification.

Myinvention relates toimprovenen ts in that class of nut-locks in which are employed longitudinally-grooved bolts, with locking-pins engaging said grooves and recessesin the nuts.

My improvements will hereinafter be distinctly claimed. Y

In the accompanying drawings, by the aid of which my improvements will be pnrt-icularl y pointed out, Figure 1 is a view partly in elevation and'partly in longitudinal central section, showing a bolt and its nut, locking-pin, and recessed washer. Fig. 2 is a view in perspective of the nut and washer separated. Fig.

3 is a central sectional View, showing the nut, locking-pin, and washer.

The bolt A, having longitudinahgroovea, the locking-pin B, having bent inner end or shoulder, b, and the nut O, provided with a series of radial notches or key-engaging' recesses, d, offset from the outer face of the nut by being formed between the shoulders or projections D, are,with the single exception hereinat'ter noted, all the same as the bolt, nut, and locking-key shown in another application for Letters Patent of the United States filed by me simultaneously herewith, andy are not herein claimed separately or in combination.

Instead of providing an annular recess surrounding the tap-hole of the nut on its inner face, as in the invention shown in my abovereferred, to application, I employ an annular-l ynut. This Washerf-as clearly shown, is flat or disk-like, and formed with the shouldered annular cavity c on its face next the nut, and surrounding and merging in the bolt-hole of the Washer.

The head or bent inner end of the lockingkey rests in lthe recess of the washer below the inner face of the nut when the parts are secured together. As the pin-head projects into the space provided for it between the inner face of the nut and the shoulder constituting the bottom of the washer-recess, endwise movement of the pin is prevented. The outer'end ofthe key is locked with the nut by bending, as will readily be understood by inspection of the drawings.

It is obvious that instead ofthe locking-key engaging notches between offsets on the outer face of' the nut, the usually-employed depressed recesses may be formed in the nut-face; but I prefer the construction shown for reasons fully explained in my above-mentioned application.

I claim as of my own invention- .The combination of the grooved bolt, the locking-pin, the nut provided with recesses for engagementby the pin, and the washer having the recess aroundthe bolt-hole to receive the shoulder at the inner end ot the lockingpin, substantially as hereinoefore set forth.

In testimony whereof Ihave hereunto subscribed my name.

RICHARDS c. SMITH.

Witnesses:

GEO. MGGAEERAY, S. A. MoRsE. 

